As Republicans were casting about for explanations for their party’s dismal showing in off-year elections last week, President Donald Trump had several other pieces of business to attend to.

The US vice president and secretary of state have divergent styles. Both are building credentials on the world stage as potential successors to Trump.

For generations, foreign policy eggheads debated the question, “Who lost China?” I’m wondering if election analysts might soon ask, “Who lost the Latinos?” Almost exactly one year ago, President Trump won an impressive election victory.